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3 years ago

How is the pressure of a gas related to its concentration of particles?

Physics

1 answer:

solniwko [45]3 years ago

7 0

As the volume of gas decreases, the pressure concentration of particles will increase.

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Im stuck on this question, please help. :)

Pie

Light travels in waves, and light travels at about 3.0x10^8 m/s. and you call that this the 'speed of light' so your answer possible could be

A. It travels at the speed of light.

I might be wrong so double check.

4 0

3 years ago

Not so fast! If a force of 2500 N is used over

Masteriza [31]

Answer:

B 1500N

Explanation:

The acceleration of the car - at least the average one, but that will do, is $a= \frac{\Delta v}{\Delta t} = \frac 53 ms^{-2} = 1.66 ms^{-2}$

We know the acceleration, we know the force, let's drop them in Newton second law.

$F= ma = 2500= m \frac53 \rightarrow m=500\times 3 N = 1500N$

3 0

3 years ago

Two train 75 km apart approach each other on parallel tracks, each moving at

creativ13 [48]

Answer:

The correct solution is "37.5 km".

Explanation:

Given:

Distance between the trains,

d = 75 km

Speed of each train,

= 15 km/h

The relative speed will be:

= $15 + (-15)$

= $30 \ km/h$

The speed of the bird,

V = 15 km/h

Now,

The time taken to meet will be:

$t=\frac{Distance}{Relative \ speed}$

$=\frac{75}{30}$

$=2.5 \ h$

hence,

The distance travelled by the bird in 2.5 h will be:

⇒ $D = V t$

$=15\times 2.5$

$=37.5 \ km$

6 0

3 years ago

2. Below are four velocity vs. time graphs. Which graph represents the motion of an object that

Airida [17]

Answer:

Answer (b)

Explanation:

Acceleration is the rate of change of velocity in time, therefore constant acceleration will be changing velocity in direct proportion to time and will have a linear plot on a velocity/time chart. This eliminates answer (d) which has an increasing acceleration in time

answer (a) has a negative slope so the acceleration would be considered negative

answer (c) has zero slope so acceleration is zero and velocity is constant.

answer (b) has the required positive slope and acceleration

6 0

3 years ago

An electron moves a 2.0x10^6 meter per the second perpendicular to a magnetic field having a flux density of 2 teslas. What is t

Darina [25.2K]

Answer:

F_B = 6.4*10^-13 N

Explanation:

The magnetic force on the electron, generated by the motion of the electron and the magnetic field is given by:

$F_B=qv\ X\ B$

q: electron charge = 1.6*10^{-19}C

v: speed of the electron = 2.0*10^6 m/s

B: magnitude of the magnetic field = 2T

However, the direction of B and v are perpendicular between them. So, the angle between vectors is 90°. The magnitude of the magnetic force is:

$|F_B|=qvBsin90\°=qvB$

You replace the values of q, v and B in the last equation:

$|F_B|=(1.6*10^{-19}C)(2.0*10^6m/s)(2T)\\\\|F_B|=6.4*10^{-13}\ N$

hence, the magnetic force on the electron is 6.4*10^-23 N

6 0

4 years ago